[Tutor] implied tuple in a list comprehension

[Jim Mooney]

# python 3 on win 7

S = enumerate('all good dogs eat shoes'.split())
# I'm curious why this works:
x = [(idx, word) for idx, word in S]
# but this doesn't:
x = [idx, word for idx, word in S] #syntax error
# Why can I imply a tuple after the for, but not before?

-- 
Jim
Just remember, food faddists, the first three letters of Diet spells DIE!